Back in Black was released in 1980 as the title track of AC/DC's seventh studio album, the first with singer Brian Johnson after the death of Bon Scott. Produced by Robert John Mutt Lange, the album became one of the best-selling records of all time, and its opening riff became a staple of rock radio, films, sports arenas and adverts. Online, the short riff excerpt is widely reused as a meme sound for entrances, transformations and confident returns, because the groove is familiar across generations and needs no explanation.